Single-motor massager

Abstract

A single-motor massager has a base, a carriage, a gear shaft assembly, a massager assembly and a motor. The base has two gear racks. The carriage is mounted movably on the base. The gear shaft assembly is mounted on the carriage and is mounted movably on the gear racks of the base. The massaging assembly is mounted on the carriage and connects to the gear shaft assembly. The motor drives the massaging assembly of the massager assembly to provide massaging function and to move the carriage and the gear shaft assembly and the massaging assembly along the base. With the two gear racks, the massaging assembly moves stably. With only one motor and the simplified gear shaft assembly and massager assembly, the manufacturing process of the massager is simplified and the cost of the massager is reduced.

1. A single-motor massager comprising:
 a base having
 a top surface having
 two ends; and 
 two sides; and 
 
 two gear racks mounted respectively on the two sides of the top surface of the base and being parallel to each other; 
 
 a carriage mounted movably on the top surface of the base; 
 a gear shaft assembly mounted on the carriage, mounted movably on the gear racks of the base and comprising
 a rod mounted rotatably on the carriage, mounted across and being perpendicular to the gear racks of the base and having two ends; 
 two gears attached securely respectively to the two ends of the rod and engaged with the gear racks of the base; and 
 an inclined gear mounted securely around the rod and having inclined teeth; 
 
 a massage assembly mounted on the carriage and comprising
 a main gear drive connecting to the gear shaft assembly and having
 an inclined gear engaging the inclined gear of the gear shaft assembly; 
 a rod driving the inclined gear of the main gear drive; and 
 a gear mounted securely around the rod of the main gear drive and having a top surface; and 
 
 a main massaging device connecting to the main gear drive and being rotated by the rod of the main gear drive; and 
 
 a motor mounted securely on the carriage and having
 a worm rod extending out of the motor and meshed with the gear of the main gear drive. 
 
 
     
     
       2. The massager as claimed in  claim 1 , wherein
 the massage assembly has
 a secondary gear drive, connecting to the gear shaft assembly, parallel to the main gear drive and having
 a rod being parallel to the rod of the main gear drive and having a lower end; and 
 a gear mounted securely around the rod of the secondary gear drive, meshed with the worm rod of the motor and having a top surface; and 
 
 a secondary massaging device connecting to the secondary gear drive. 
 
 
     
     
       3. The massager as claimed in  claim 1 , wherein
 the base has multiple grooves formed in the top surface of the base and being parallel to each other; and 
 the carriage has
 a bottom surface facing the top surface of the base; 
 multiple holes formed in the bottom surface of the carriage and respectively corresponding to the grooves of the base; and 
 multiple balls, and each ball mounted rotatably in one of the holes of the carriage, extending out of the bottom surface of the carriage and mounted slidably in a corresponding groove of the base. 
 
 
     
     
       4. The massager as claimed in  claim 2 , wherein
 the base has multiple grooves formed in the top surface of the base and being parallel to each other; and 
 the carriage has
 a bottom surface facing the top surface of the base; 
 multiple holes formed in the bottom surface of the carriage and respectively corresponding to the grooves of the base; and 
 multiple balls, and each ball mounted rotatably in one of the holes of the carriage, extending out of the bottom surface of the carriage and mounted slidably in a corresponding groove of the base. 
 
 
     
     
       5. The massager as claimed in  claim 1 , wherein
 the massage assembly has
 a housing mounted securely on the carriage, covering the main gear drive and having
 an upper housing portion; 
 a lower housing portion mounted on the carriage; 
 a side edge; 
 a main hole formed through the upper housing portion and mounted around the rod of the main gear drive; 
 a connecting recess formed in the inner surface of the lower housing portion, mounted around the inclined gear of the main gear drive and having an opening corresponding to the inclined gear of the gear shaft assembly; 
 a passage being tubular and formed in the side edge of the housing; and 
 a support connecting to the side edge of the housing and having an opening formed through the support and aligning with the passage; 
 
 
 the motor is mounted securely in the support of the housing; and 
 the worm rod extends through the opening of the support and is mounted rotatably in the passage of the housing. 
 
     
     
       6. The massager as claimed in  claim 4 , wherein
 the massage assembly has
 a housing mounted securely on the carriage, covering the main gear drive and having
 an upper housing portion; 
 a lower housing portion mounted on the carriage; 
 a side edge; 
 a main hole formed through the upper housing portion and mounted around the rod of the main gear drive; 
 a connecting recess formed in the inner surface of the lower housing portion, mounted around the inclined gear of the main gear drive and having an opening corresponding to the inclined gear of the gear shaft assembly; 
 a passage being tubular and formed in the side edge of the housing; and 
 a support connecting to the side edge of the housing and having an opening formed through the support and aligning with the passage; 
 
 
 the motor is mounted securely in the support of the housing; and 
 the worm rod extends through the opening of the support and is mounted rotatably in the passage of the housing. 
 
     
     
       7. The massager as claimed in  claim 1 , wherein the inclined gear of the gear shaft assembly has teeth inclined with an angle of 45 degrees. 
     
     
       8. The massager as claimed in  claim 6 , wherein the inclined gear of the gear shaft assembly has teeth inclined with an angle of 45 degrees. 
     
     
       9. The massager as claimed in  claim 1 , wherein
 the main massaging device has
 a rotating frame mounted securely around the rod of the main gear drive and having
 a bracket having a hole mounted securely around the rod of the main gear drive; and 
 two rods formed separately on the bracket of the rotating frame; 
 
 a connecting bracket mounted securely around the rods of the rotating frame and having
 two caves formed separately in the connecting bracket; and 
 two holes formed respectively through the caves and mounted respectively securely around the rods of the rotating frame; and 
 
 two nodes, and each node mounted securely around a corresponding rod of the rotating frame, mounted securely in a corresponding cave of the connecting bracket and having a hole formed through the node and mounted around the corresponding rod of the rotating frame. 
 
 
     
     
       10. The massager as claimed in  claim 8 , wherein
 the main massaging device has
 a rotating frame mounted securely around the rod of the main gear drive and having
 a bracket having a hole mounted securely around the rod of the main gear drive; and 
 two rods formed separately on the bracket of the rotating frame; 
 
 a connecting bracket mounted securely around the rods of the rotating frame and having
 two caves formed separately in the connecting bracket; and 
 two holes formed respectively through the caves and mounted respectively securely around the rods of the rotating frame; and 
 
 two nodes, and each node mounted securely around a corresponding rod of the rotating frame, mounted securely in a corresponding cave of the connecting bracket and having a hole formed through the node and mounted around the corresponding rod of the rotating frame; and 
 
 the secondary massaging device having
 a rotating frame mounted securely around the rod of the secondary gear drive and having
 a bracket having a hole mounted securely around the rod of the secondary gear drive; and 
 two rods formed separately on the bracket of the rotating frame of the secondary massaging device; 
 
 a connecting bracket mounted securely around the rods of the rotating frame of the secondary massaging device and having
 two caves formed separately in the connecting bracket of the secondary massaging device; and 
 two holes formed respectively through the caves of the connecting bracket of the secondary massaging device and mounted respectively securely around the rods of the rotating frame of the secondary massaging device; and 
 
 two nodes, and each node mounted securely around a corresponding rod of the rotating frame of the secondary massaging device, mounted securely in a corresponding cave of the connecting bracket of the secondary massaging device and having
 a hole formed through the node and mounted around the corresponding rod of the rotating frame of the secondary massaging device. 
 
 
 
     
     
       11. The massager as claimed in  claim 1 , wherein the base has two reverse switches mounted securely on the base and mounted respectively on the two ends of the top surface of the base. 
     
     
       12. The massager as claimed in  claim 10 , wherein the base has two reverse switches mounted securely on the base and mounted respectively on the two ends of the top surface of the base. 
     
     
       13. The massager as claimed in  claim 1 , wherein
 the carriage has a holder formed on the carriage; and 
 the motor is mounted securely on the holder of the carriage. 
 
     
     
       14. The massager as claimed in  claim 12 , wherein
 the carriage has a holder formed on the carriage; and 
 the motor is mounted securely on the holder of the carriage. 
 
     
     
       15. The massager as claimed in  claim 14 , wherein the motor has a block mounted securely on the support of the housing of the massage assembly. 
     
     
       16. The massager as claimed in  claim 1 , wherein
 the massage assembly has
 a housing mounted securely on the carriage, covering the main gear drive and having
 an upper housing portion; and 
 a main keyed rod formed on and protruding out from the upper housing portion; and 
 
 
 the main massaging device comprising
 a transfer gear mounted rotatably on the upper housing portion and engaging the rod of the main gear drive; 
 a driven gear mounted rotatably on the upper housing portion, engaging the transfer gear of the main massaging device and mounted securely around the main keyed rod; 
 a linking bracket mounted securely on the upper housing portion and mounted around the transfer gear and the driven gear of the main massaging device; 
 a rotating disk mounted rotatably on the linking bracket and mounted securely around the main keyed rod; and 
 two nodes mounted securely on the rotating disk. 
 
 
     
     
       17. The massager as claimed in  claim 16 , wherein
 the housing of the massage assembly further has a secondary keyed rod formed on and protruding out from the upper housing portion; and 
 the massage assembly has
 a secondary gear drive, connecting to the gear shaft assembly, parallel to the main gear drive and having
 a rod being parallel to the rod of the main gear drive and having a lower end; and 
 a gear mounted securely around the rod of the secondary gear drive, meshed with the worm rod of the motor and having a top surface; and 
 
 a secondary massaging device comprises
 a transfer gear mounted rotatably on the upper housing portion and engaging the rod of the secondary gear drive; 
 a driven gear mounted rotatably on the upper housing portion, engaging the transfer gear of the secondary massaging device and mounted securely around the secondary keyed rod; 
 a linking bracket mounted securely on the upper housing portion and mounted around the transfer gear and the driven gear of the secondary massaging device; 
 a rotating disk mounted rotatably on the linking bracket of the secondary massaging device and mounted securely around the secondary keyed rod; and 
 two nodes mounted securely on the rotating disk of the secondary massaging device. 
 
 
 
     
     
       18. The massager as claimed in  claim 1 , wherein the rod of the main gear drive is mounted securely in and extends through the inclined gear of the main gear drive. 
     
     
       19. The massager as claimed in  claim 1 , wherein the main gear drive further has
 a driven gear mounted securely around the rod of the main gear drive; 
 a first transfer gear engaging the driven gear of the main gear drive; 
 a transfer rod mounted rotatably on the carriage; 
 a second transfer gear mounted securely around the transfer rod of the main gear drive and engaging the first transfer gear and the inclined gear of the main gear drive. 
 
     
     
       20. The massager as claimed in  claim 12 , wherein the base has a middle switch mounted on the top surface of the base and mounted between the reverse switches.